I have learned that you have to prioritize the words you try in any new language. The first words to learn are:
1) "How much?" This year alone, I have learned to say "How much?" in Spanish, Mongolian, Russian, Chinese, Amharic and Tibetan.
Followed by a close second of:
2) The numbers
Only after you have mastered those will you need to say:
3) "Thank you"
And finally, only if you plan on riding the subway or any really crowded place, you learn to say:
That will cut it just about anywhere.
The word "please" isn't on my list; if it was, it would be about #435....only Canadians say please. We also say sorry, a lot.